[pull] master from rust-lang:master

Merged
PU
4mo ago
+201-8

See Commits and Changes for more details.

Created by pull[bot] (v2.0.0-alpha.4)

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Summary by cubic

Fix timing reports to only include units the job queue actually ran and to handle no-work sessions correctly. Removes zero-duration rows and clarifies behavior between --timings and cargo report timings (fixes #17212).

  • Bug Fixes

    • Report only units that started; exclude fresh units and those run outside the queue, and drop references to non-started units.
    • --timings: always writes a report; shows an empty dataset (const UNIT_DATA = [];) when nothing ran.
    • cargo report timings: errors on logs with no units with “no timing data found in log”.
    • Added error_if_no_units to prepare_context and updated call sites to set it appropriately.

  • Tests

    • Doctest units are not reported as zero-duration rows.
    • Fresh rebuilds produce an empty dataset instead of zero-duration rows.
    • Idle sessions: cargo report timings errors; --timings still generates an empty report.